Improvement in axle-gauges



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Leners Patent No. 98,280, ma December 28, 1869.

IMPROVEMENT IN AXLE-G'AUGES.

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Theschedule referred to in these Letters Patent and making' paxt of the name.y

saine, reference being had to the accompanying draw-' ings, forming part of this specilication.

' The object of this invention is to provide improved gauges for readily determining the pitch for the arms of the wood-axles, by which to bel guided in dressing down the said armsv for the receptionlof the skeins, so`

that when the Wheels are placed therein, the spokes of dis'hed wheelswill, when at the underside of the hubs, stand perpendicular.

The invention comprises a bar made in two parts, joined at the centre, and adjustable lengthwise, whereon, upon the sides, gauge-supports, consisting of fiat barswith right-angular projecting arms supportingr the gauges, are pivoted at the angles, and ranged along scales, by which the said gauges, which consist of short blocks about the length of the axle-arms, with adjustable gauge-screw, and supported by the said right-angled projection of the gauge-supports, in advance ofthe edges of the bar, may be adjusted to the requiredinclination to the longitudinal line of the bar, the said inclination being ascertained from the inclination ofthe spokes and the taper of the axle-arms, as hereinafter more fully speciiied,v

Figure l represents a side elevation cfa-n axle-gauge, constructedaccording to my invention.`

Figure 2 represents a side elevation of a modified arrangement of the same, and Figure 3 represents a face view of one of the blocks. A represents the stock or bar of the gauge, which is made in two parts, lapping each other, as shown at B, and provided with a clamping-screw, C, whereby the said stock is lengthened or shortened for axles of di'iierent lengths.

, D represents gauge-block supports, consisting of long fiat plates ot' metal or other substance, having right-angled projectins E, supporting, at their outer ends, the gauge-blocks ll", andv pivoted to the sides of the stocks A, one at each end, at the angles, so that the long arms stand parallel with the stocks, and the short arms at right angles thereto.

Along one edge of these arms D, when standing exactly parallel with the edges of theV stock,`a right line, G, is drawn, having a scale marked on ,it in inches, beginning at the pivots of the arm D, and

numbering toward the centre.

H represents curved slotted bars, under which the arms work, and through the slots'of which the clamping set-screws I, connecting to the said arms, work, to secure them 'at auy'required point.

, 'lhe blocks F have pins or .screws K L M projecting therefrom, which,I when the gauge lis applied to the axle, represent what the line of the lower part or surface of the axle-arms would be, and by the aid of which the said line is determined.

The pins K and M should project the same distance. The latter are adjustable to or from the pins K for axle-arms of did'erent lengths. The pins g have grocved heads to gauge the curvatures of the said arms, and may be adjusted inward or outward, as preferred.

To use the gauge,lthe stock Abeing first adjusted to the proper length foi; the axle, so that the pins M will stand at, the collars of the arms, I rst ascertain the distance of the' radii of the wheel, and then the dish7 oreon'cavity of the same.

Supposing the first to/be, say, twenty-four inches, and the second, one anda half, I take a pair of dividers, separating the points one and a half inches, and space of that distance from the line G, at the twenty-four-ineh scale-mark above the said line, and set the 4arm D, at the said distance from. the said line.

This would give; the required vertical line of' the spokes below the l1ub,if the axle-arm and the hole through the hub are ofthe saine diameter throughout the whole length, which is not the case.

To compensate for this, I find that by` taking the one-half of the difference in the diameters of the axlearms at the inner and outer ends, the circulation of the one side thereof form the lille which may be supposed to be-tlnee-quarters of an inch in a line of ten inches in length. Then setting the dividers at threequarters ofan inch, I space back from the edge of .the arm I), at the scale number ten, the said distance, moving the arm thereto, and securing it(y This done,

the pins M K of the blocks E will indicate the required inclination for the under side of the axle-arm, which I dress down flat to this said inclination, afterwards rounding it up to the required taper, from this line asa base, litting the skeins thereto, to agree with the line thus indicated by the gauge.

For obtaining the pitch of the axle-arms, without -reference to the size or dish of the wl1eel,--I have provided, on the opposite side ot' thestock A, other guide-block supports, D ll, of similar construction and arrangement, but shorter in the arms D, by which,

taking one-half the taper of the arm, or one-half the difference between the large and small diameters ot",`

the said arms, and setting the 'arms D upward from the line G, at the scale-mark coirespondiugto the.

length of the .axle-arnn'lob'tain the inclinationy forv the arms at any side.

It will be understood that the blocks F, at each end of the stock, are to be similarly adjusted.

EIaving thus described myinventionf I claim as new, and desireto secure by Letters Patent- 1. The combination with the stock A, made in two parts, adjustable lengthwise, and provided with sea-les, as described, of the gauge-block-supporting arms D E or D E', substantially as specified.

2. The combinationwith the gauge-blocks F, when arranged with reference to their supports, and the stock A,as specified, of the pins K L M, when arranged as vspecied.

The above specification of my invention signed by me, this 15th day of June, 1869.

Go'r'rLIE LUEDKE.

Witnesses: y

C. G. PARKHURST, L. FISHER. 

